hello all,

i'm trying to add some tiled BG images to the LEFT and RIGHT of my cart as is set up here:

http://www.naiah.fr/shop/

i understand where to place CSS to add the Flowers like on that site (see bleow):

#flowersleft {
background:url(../images/bg_flowers_left.png);
width:250px;
height:440px;
position:absolute;
left:4%;

}
#flowersright {
background:url(../images/bg_flowers_right.png);
width:250px;
height:440px;
position:absolute;
right:4%;
}


BUT, i cannot figure out where the code is placed to call the CSS.

What PHP file do i need to add the following part to?

<div id="flowersleft"> </div>
<div id="flowersright"> </div>


thanks for any help,
-s.